Khalifa University

Qualcomm Incorporated

Other

United Arab Emirates University

Baker Mohammad

Mahmoud A Al-Qutayri

Mohammed Ismail Elnaggar

Hani Hasan Mustafa Saleh

Paul Bassett

Mohammad Radwan Alhawari

Martin Saint-Laurent

Ehab Najeh Salahat

Andrzej Stefan Sluzek

Heba Abunahla

Maguy Abi Jaoude

Khaled Hamed Salah

Hong Seok Kim

Anas Alazzam

Dirar Al-Homouz

Curtis O'Kelly

Lucian Codrescu

Sujat Jamil

Suresh Kumar Venkumahanti

Ajay Anant Ingle

Muhammad Ahmed

Mahmoud Al Ahmad

Ahsan Khandoker

Nourhan Yahya Bayasi

Temesghen Tekeste Habte

Dima Kilani

Sueda Saylan

Bushra Abbas Mohammed Essa Albelooshi

Safa Najeh Salahat

Yasmin Halawani

Hamza Yacoub Al Maharmeh

Mahmoud Al-qutayri

Abdulqader Nael Mahmoud

Khaled Muneer Mutlaq Humood

A planar graphene oxide (GO)-based device including multiple resistance state elements in response to an applied voltage and wherein the multiple resistance state elements mimic neural synapse behavior. The device has multiple application potentials including but not limited to non-volatile electronic memory, sensors, computing for Artificial intelligence (AI) and security. Also disclosed is method of manufacturing a memristor microdevice comprising the steps of patterning metal layer and graphene oxide or reduced graphene oxide thin films on different substrates and producing reduced graphene oxide (rGO) thin film through reduction of the graphene oxide layer. Fabricating thin films of graphene oxide and reduced graphene oxide in the microdevice from an aqueous solution of graphene oxide, results in making the process simple, cost effective, and suitable for mass production of the microdevice.

Low cost graphene-based microdevices with multi-state resistive values

A glucose sensor includes an insulating metal oxide layer and at least one pair of metallic electrodes arranged on the insulating metal oxide layer and separated by a gap containing the metal oxide layer. In operation, a probe including a voltage supply and current sensor can provide a voltage difference across the first and second metallic electrodes while a sample is present across the gap between the electrodes. A measured current between the first and second metallic electrodes when the voltage difference is provided can be correlated to a glucose level of the sample.

Glucose sensing device

Techniques for measuring vacuum pressure using a memristor element are described. A vacuum sensor can include a memristor element having a semiconductor substrate, a memristive material layer, and a conductive electrode. The off-state resistance of the memristor element can be sensitive to changes in ambient pressure at the element. The off-state resistance of the memristor element may also exhibit a well-defined increase at pressures below a threshold pressure. Measurement of the off-state resistance may be obtained with low power consumption and without changing the resistance or switching the state of the memristor element. The measurements may be used to both determine a leak rate of the ambient pressure within the volume of interest and determine if the sensor is exposed to vacuum pressure below the threshold pressure.

Low power memristive vacuum sensor

Devices, systems, and methods of using one or more memristors as a radiation sensor are enabled. A memristor can be attractive as a sensor due to its passive low power characteristics. Medical and environment monitoring are contemplated use cases. Sensing radiation as part of a security system (at an airport for example) and screening food for radiation exposure are also possible uses. The memristor as a radiation sensor may possibly provide an inexpensive and easy alternative to personal thermoluminescent dosimeters (TLD). Memristor devices with high current and low power operation may be attached with wearable plastic substrates. An example device includes two metal strips with a 50 &#x3bc;m thick layer of TiOmemristor material. The device may be made large relative to traditional memristors which are nanometers in scale but its increased thickness can significantly increase the probability of radiation interaction with the memristor material.

Memristor based sensor for radiation detection

An electrocardiogram (ECG) processor is disclosed. The ECG processor includes ECG sampling circuitry configured in a first mode to acquire a continuous ECG sample set from an ECG signal by digitally sampling the ECG signal at a Nyquist rate for a first predetermined number of heartbeats and in a second mode to acquire a non-continuous ECG sample set from the ECG signal for a second predetermined number of heartbeats by digitally sampling active regions of the ECG signal that contain a PQRST complex and not from silent regions between adjacent PQRST complexes. The ECG processor also includes processing circuitry configured to determine from the continuous ECG sample set relative locations of the active regions and provide the relative locations of the active regions to the ECG sampling circuitry for sampling the ECG signal in the second mode.

Electrocardiagram (ECG) processor

Disclosed is an energy mixer having a first active diode coupled between a first input node and an output node, and a second active diode coupled between a second input node and the output node. A first capacitor is coupled between the first input node and a dynamic node, and a second capacitor is coupled between the second input node and a third node. Switching circuitry is configured to selectively couple the dynamic node between a fixed voltage node and the second input node in response to a control signal provided by control circuitry. When an output voltage at the output node is within a first range, the dynamic node is coupled to the fixed voltage node and when the output voltage is within a lower voltage second range, the dynamic node is coupled to the second input node such that first capacitor and second capacitor are coupled in series.

Energy mixer

Data compression using a memristive crossbar is enabled. Conductances of memristors may be set such that the memristors of the crossbar act as coefficients of a wavelet transformation coefficient matrix with respect to voltage signals applied to input rows of the crossbar. The memristors may act as coefficients of the transpose of the wavelet transformation coefficient matrix when voltage signals are applied to input columns of the crossbar. Hence, the memristive crossbar may be used to implement a two dimensional (2D) discrete wavelet transform (DWT) on two dimensional data (e.g., image data) encoded in the voltage signals. The resulting currents in the columns of the memristive crossbar may be integrated and converted to voltage signals that are fed back into columns of the memristive crossbar such that the rows of the memristive crossbar output electronic signals that correspond to the image data compressed in accordance with Haar 2D-DWT image compression.

Data compression using memristive crossbar

A two dimensional charge pump and control circuitry is disclosed. The two dimensional charge pump includes a group of parallel-coupled charge pumps coupled between a DC power source and a first output connection node via a corresponding group of charge pump connection nodes. The group of parallel-coupled charge pumps has a corresponding group of clock connection nodes. Each of the group of parallel-coupled charge pumps includes a corresponding group of series capacitive elements coupled between a corresponding one of the group of charge pump connection nodes and a corresponding one of the group of clock connection nodes.

Two dimensional charge pump

A switched capacitor DC-DC converter, which includes a pulse frequency modulation circuit, a multiplexing pulse-width modulation circuit, and a switched capacitive element, is disclosed. The switched capacitive element is coupled between the pulse frequency modulation circuit and the multiplexing pulse-width modulation circuit. The pulse frequency modulation circuit uses a DC source signal to charge the switched capacitive element. The pulse frequency modulation circuit provides a group of output signals by multiplexing the switched capacitive element and reduces reverse current to the switched capacitive element when updating each of the group of output signals.

Methods and apparatus for simultaneously generating multiple output voltage levels utilizing switched capacitor DC-DC converter

Architecture and a method for maximally stable extremal regions (MSERs)-based detection of exudates in an ocular fundus is disclosed. The architecture includes a communication interface to receive pixels of an ocular fundus image. The architecture further includes processing circuitry that is coupled to the communication interface. The processing circuitry is configured to automatically provide labels for light image regions and dark image regions within the ocular fundus image for a given intensity threshold and find MSERs within the ocular fundus image based on the labels. The architecture also determines MSER regions based on the MSER criteria and then highlights the pixels of the ocular fundus image that are located within MSER regions to indicate the exudates in the ocular fundus. The architecture is further configured to determine MSER ellipses parameters based on MSER regions and MSER criteria and then highlight the locations of the exudates in the ocular fundus.

Architecture and method for maximally stable extremal regions (MSERs)-based exudates detection in fundus images for diabetic retinopathy

A medical device having automated electrocardiogram (ECG) feature extraction is disclosed. The medical device includes input circuitry configured to receive an ECG signal. Processing circuitry coupled to the input circuitry is configured to identify at least one fiducial point of heartbeat signature of the ECG signal. The processing circuitry is further configured to perform substantially simultaneously both a discrete wavelet transform (DWT) and a curve length transform (CLT) to identify the at least one fiducial point.

Medical device having automated ECG feature extraction

A thermoelectric energy harvesting system for charging an energy store from ambient thermal energy includes a thermoelectric energy generator (TEG), an automatic polarity monitor, and switching matrix. The polarity monitor detects when the polarity of an input voltage in the system is reversed relative to a standard voltage polarity, and causes the switching matrix to switch the inputs from the thermoelectric energy harvester.

Auto-polarity in an inductor based converter

A method of erasing volatile memory requiring refreshment using refresh circuitry to maintain data storage, the method comprising controlling the refresh circuitry for preventing refreshment of the memory upon occurrence of a predefined event which would require erasure of data stored in the memory by a previous user, process, application or service. A computer readable medium encoded with processor executable instructions for execution by a processing unit for controlling a refresh circuitry connected to a volatile memory for preventing refreshment of the memory at the predefined event. A refresh circuitry adapted to be connected to a volatile memory requiring refreshment using the refresh circuitry to maintain data storage, the refresh circuitry being adapted to prevent the refreshment of the memory at the occurrence of the predefined event. A volatile memory comprising a refresh circuitry adapted to prevent the refreshment of the memory at the occurrence of the predefined event.

Growing community of inventors

Abu Dhabi, United Arab Emirates

Baker Mohammad